The casting comes a year after the NBC comedy brought on Jenny Slate to play evil genius Jean-Ralphio's (Ben Schwartz) like-minded sister. It's unclear whether the apple doesn't fall too far from the tree.

Winkler (Happy Days, Childrens Hospital, Arrested Development) will appear in the season six premiere and potentially return in future episodes of the series -- the same way Schwartz's alter-ego has during Parks' run.